body{font-family:Arial,sans-serif;margin:0;background:#f5f7fb}header{display:flex;justify-content:space-between;padding:18px;background:#06172f;color:#fff}.hero{padding:70px 20px;text-align:center;background:#06172f;color:#fff}.card{background:#fff;margin:20px;padding:20px;border-radius:12px}.btn{background:#16a34a;color:#fff;padding:10px 18px;border-radius:8px;text-decoration:none;display:inline-block}